I guess it is due to bad prior personal experience.
Mostly with cheap laptops/tablets. The worst of them made me wait for 3 whole additional seconds staring to the company logo before boot took place. Luckly it could be disabled as UEFI boot option. (Yes I know there is no reason for a little picture to make that much of a difference, so it had to be intentional) On other two I had to edit Files and patch the damn BIOS in order to get rid of it.
One of the reasons I like the PF so much is the promise of no bloatware, So when the UEFI SplashScheen was mentioned... Ugh. Visceral reaction.